Switch



A. H. PERRY.

SWITCH.

APPLICATION FILED APR. I1. I920.

1,393,312, Patented Oct. 11, 1921.

2 SHEETS-SHEET l- 7' amvcnfoz uQ-E-Bwry.

Wm... wuzzw a elf/town:

A. H. PERRY.

SWITCH.

APPL'ICATION FILED APR- 17, I920.

Patented Oct. 11, 1921.

fiHEETSeSHEET 2.

UNITED STATES PATENT OFFKIE.

ARTHUR HENRY PERRY,

OF DE WITT, ARKANSAS.

swrron.

Application filed April 17, 1920. Serial No. 374,615:

To all whom it may concern:

Be it known that I, ARTHUR HENRY-Penny, a citizen of the United States, and a resident of De Witt, in the county of Arkansas and State of Arkansas, have invented certain new and useful Improvements in Switches, of which the following is a specificatlon.

My invention is an improvement in a device for use on auto vehicles whereby to control the ignition circuit by the angle assumed by the vehicle in ascending or descending unusual grades, and the invent on has for an object, among others, to provide means whereby the movement by gravity of a suitably graded device may operate to control the ignition circuit.

Another important object is to provide a device of the above mentioned character which may be adjusted to operate whenever the vehicle may assume any predetermined angle of ascent or descent.

A further object is to provide a switch which is extremely simple in construction, positive in operation and inexpensive to manufacture.

Other objects will become apparent during the course of the following description.

In the drawings forming a part of this specification, andjin which like numerals are employed to designate like through the same,

Figure 1 is a side view of part of my 1nvention, partly in section showing the movin elements in their normal positions,

Fig. 2 is a side view of the device,

Fig. 3 shows the adjustments and scale,

Fig. 4; is a section on line 44 of Flg. 3,

Fig. 5 shows the device secured to the vehicle, y j

Fig. 6 is a diagrammatic view of the switch inserted in the ignition primary circuit, and

Fig. 7 is a section on line 7-7 of Fig. 3.

Inthe drawings, a supporting block 10 for carrying the device is mounted in any suitable place usually in close proximity to the magneto or other source of current, supplying current to an ignition circuit of an internal combustion engine. I find it very convenient to attach the device to the running board R of the vehicle, as shown in Fig. 5. A bolt 11 passes through the support 10, the said bolt passing through a'slot 12 in the bracket bar 13, and adapted to be locked in position by a nut 13'. The bracket characters bar 13 carries a cylinder or casing 14 clamped thereto and pivoted at 15 to the support 10.

As shown in Fig. 7 the bracket bar 13 rides over a sleeve 11 carried by bolt 11, said sleeve acting as a guide to prevent the bracket bar from rubbing against the plate 35 hereinafter referred to.

One end of the cylinder 14 is provided with a screw cap 16 which carries a plug 17 for the purpose of retaining a spring 18 within the cylinder.

The opposite end of the cylinder 14; is provided with a body portion 19 secured thereto by a screw 20. An insulation tube or bushing 21 passes through the body portion and houses a plunger rod 22 having a plunger head 23 mounted thereon. A spring 24 normally holds the plunger in position as shown by the solid lines in Fig. 1. The opposite end of the plunger rod 22 carries a contact post 25 secured thereto by adjusting nuts 26. A guide pin 27 mounted in the body portion 19 serves to guide thecontact post 25 in its movement. 9

A wire leading from the magneto is connected to the contact post 25 by a nut 28.

Asecond contact post 29 is secured'to the c linder and an extension of the body portlOIl 19, by a bolt 30 and a nut 31. The bolt 30 and nut 31 are insulated fromthe cylinder and body portion by a bushing 32. A nut 33 1secures the wire leading to the induction coi i A gravity operated device is movable freely in the direction of length of the cylindervor casing 14. This is shown as one or more steel balls 34 free to move within. the

cylinder 14.' A plate 35 carrying a scale 36 is mounted upon the support 10 in such a position that when a POlIltBI, 37 secured to the cylinder 14 points to 0ft. on the scale, the cylinder will be in a horizontalplane. The plate 35 is spaced from the support 10 by means of a bolt 38 carrying a spacing sleeve 39 as shown in Fig. 4.

In operation, the cylinder is adjusted and locked in position by means of the nut 13'. so that the pointer 37 indicates at what grade the switch will operate. For example, say the pointer is set at 4 ft. as in Fig. 3. When the vehicle to which the device is attached descends a rade equal to or in excess of): a. the balls within the cylinder will be forced by gravity against the plunger head 23 which is normally in position as shown in Fig. 2. The weight of the balls against the plunger head forces it against the compression of the spring 24 and moves the contact 25 out of engagement with contact 29. It will be seen that the ignition circuit is thus broken and the engine will cease to operate.

It is to be understood that various changes in the size, shape and arrangement of parts may be resorted to, without departing from the spirit of the invention or the scope of the claims.

I claim:

1. In a device of the character described, a normally closed circuit, and means for breaking said circuit, including a cylinder pivoted to swing vertically, locking means to maintain the cylinder in any predetermined position, weights freely movable within the cylinder, contact means mounted upon one end of the cylinder, and a spring pressed plunger normally closing said contact means.

2. In a switch, a spring pressed plunger, a contact point mounted upon the plunger for movement therewith, a second contact point normally engaging said first contact point,

and means for disengaging said contact points including weights which are sufficient to overcome the tension applied to the plun er.

3. In a switch, a support, a scale carried by the support, an adjustably mounted cylinder carried by the support, a pointer carried by the cylinder and adapted to move over the scale, with the cylinder, a plurality of normally engaged contacts, and means for disengaging said contacts when the cylinder is tilted to an angle equal to or greater than that indicated on the scale.

4. In a switch, in combination with means for indicating the angle of inclination, normally engaged contacts, and means for disengaging said contacts, including a cylinder carrying one of the contacts, a spring pressed plunger carrying the other contact mounted to reciprocate within the cylinder, and weights for overcoming the tension applied to the plunger, when the predetermined angle is indicated.

ARTHUR HENRY PERRY.

Witness W. C. POYNTER. 

